2 // This file is part of Moodle - http://moodle.org/
4 // Moodle is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU General Public License as published by
6 // the Free Software Foundation, either version 3 of the License, or
7 // (at your option) any later version.
9 // Moodle is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with Moodle. If not, see <http://www.gnu.org/licenses/>.
18 * This page deals with processing responses during an attempt at a quiz.
20 * People will normally arrive here from a form submission on attempt.php or
21 * summary.php, and once the responses are processed, they will be redirected to
22 * attempt.php or summary.php.
24 * This code used to be near the top of attempt.php, if you are looking for CVS history.
28 * @copyright 2009 Tim Hunt
29 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
32 require_once(dirname(__FILE__) . '/../../config.php');
33 require_once($CFG->dirroot . '/mod/quiz/locallib.php');
35 // Remember the current time as the time any responses were submitted
36 // (so as to make sure students don't get penalized for slow processing on this page).
39 // Get submitted parameters.
40 $attemptid = required_param('attempt', PARAM_INT);
41 $next = optional_param('next', false, PARAM_BOOL);
42 $thispage = optional_param('thispage', 0, PARAM_INT);
43 $nextpage = optional_param('nextpage', 0, PARAM_INT);
44 $finishattempt = optional_param('finishattempt', false, PARAM_BOOL);
45 $timeup = optional_param('timeup', 0, PARAM_BOOL); // True if form was submitted by timer.
46 $scrollpos = optional_param('scrollpos', '', PARAM_RAW);
48 $transaction = $DB->start_delegated_transaction();
49 $attemptobj = quiz_attempt::create($attemptid);
58 $nexturl = $attemptobj->summary_url();
60 $nexturl = $attemptobj->attempt_url(null, $page);
61 if ($scrollpos !== '') {
62 $nexturl->param('scrollpos', $scrollpos);
66 // If there is only a very small amount of time left, there is no point trying
67 // to show the student another page of the quiz. Just finish now.
68 $accessmanager = $attemptobj->get_access_manager($timenow);
69 $timeleft = $accessmanager->get_time_left($attemptobj->get_attempt(), $timenow);
71 if ($timeleft !== false && $timeleft < QUIZ_MIN_TIME_TO_CONTINUE) {
73 if ($timeleft < -get_config('quiz', 'graceperiodmin')) {
79 require_login($attemptobj->get_course(), false, $attemptobj->get_cm());
82 // Check that this attempt belongs to this user.
83 if ($attemptobj->get_userid() != $USER->id) {
84 throw new moodle_quiz_exception($attemptobj->get_quizobj(), 'notyourattempt');
87 // Check capabilities.
88 if (!$attemptobj->is_preview_user()) {
89 $attemptobj->require_capability('mod/quiz:attempt');
92 // If the attempt is already closed, send them to the review page.
93 if ($attemptobj->is_finished()) {
94 throw new moodle_quiz_exception($attemptobj->get_quizobj(),
95 'attemptalreadyclosed', null, $attemptobj->review_url());
98 // If time is running out, trigger the appropriate action.
99 $becomingoverdue = false;
101 if ($attemptobj->get_quiz()->overduehandling == 'graceperiod') {
102 $becomingoverdue = true;
104 $finishattempt = true;
108 // Don't log - we will end with a redirect to a page that is logged.
110 if (!$finishattempt) {
111 // Just process the responses for this page and go to the next page.
114 $attemptobj->process_submitted_actions($timenow, $becomingoverdue);
116 } catch (question_out_of_sequence_exception $e) {
117 print_error('submissionoutofsequencefriendlymessage', 'question',
118 $attemptobj->attempt_url(null, $thispage));
120 } catch (Exception $e) {
121 // This sucks, if we display our own custom error message, there is no way
122 // to display the original stack trace.
124 if (!empty($e->debuginfo)) {
125 $debuginfo = $e->debuginfo;
127 print_error('errorprocessingresponses', 'question',
128 $attemptobj->attempt_url(null, $thispage), $e->getMessage(), $debuginfo);
132 // The student is too late.
133 $attemptobj->process_going_overdue($timenow, true);
136 $transaction->allow_commit();
137 if ($becomingoverdue) {
138 redirect($attemptobj->summary_url());
144 // Otherwise, we have been asked to finish attempt, so do that.
146 // Log the end of this attempt.
147 add_to_log($attemptobj->get_courseid(), 'quiz', 'close attempt',
148 'review.php?attempt=' . $attemptobj->get_attemptid(),
149 $attemptobj->get_quizid(), $attemptobj->get_cmid());
151 // Update the quiz attempt record.
153 $attemptobj->process_finish($timenow, !$toolate);
155 } catch (question_out_of_sequence_exception $e) {
156 print_error('submissionoutofsequencefriendlymessage', 'question',
157 $attemptobj->attempt_url(null, $thispage));
159 } catch (Exception $e) {
160 // This sucks, if we display our own custom error message, there is no way
161 // to display the original stack trace.
163 if (!empty($e->debuginfo)) {
164 $debuginfo = $e->debuginfo;
166 print_error('errorprocessingresponses', 'question',
167 $attemptobj->attempt_url(null, $thispage), $e->getMessage(), $debuginfo);
170 // Send the user to the review page.
171 $transaction->allow_commit();
172 redirect($attemptobj->review_url());